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Mc-30 McCulloch Racing Engine

Part No. IPL 48596 www.mccullochracing.com

K ar t E ngine Mc-30 Illustrated Parts List

February 1962 Price $7.50

MMccCCuulllloocchh RRaacciinngg CCoorrppoorraattiioonn P.O. Box 531351, Henderson, Nevada 89053-1351 U.S.A. Tel.: (702) 277-1894

The following pages contain an illustrated parts list for the Mc-30 ‘Super’ type Kart Engine. Due to small differences between engines, it is important that the Serial Number of your kart engine be included whenever spare parts are ordered. This will assure receiving the proper parts from McCulloch Racing Corporation. The McCulloch Racing Corporation reserves the right to modify or change replacement part numbers without (1) prior notification or (2) obligation to back-fit or supply back-fit components for units previously shipped from McCulloch Racing Corporation.

This document, logos and all illustrated figures are copyright © 2000-2002 McCulloch Racing Corporation, Las Vegas, Nevada, U.S.A.

Figure Description Page # Figure 1. Engine Assembly, Model Mc-30 Engine 2 Figure 2. McCulloch Corp. Carburetor Assemblies 4 Figure 3. Powerhead Assembly 6 Oversize Piston List 8

This Illustrated Parts List is Part No. 48596.

Part No. 400155R

©



Figure 1. Engine Assembly, Model Mc-30 Engine

Copyright © 2001 McCulloch Racing Corporation



FIGURE 1. ENGINE ASSEMBLY, MODEL MC-30 ENGINE

IInnddeexx PPaarrtt UUnniittss NNoo.. NNuummbbeerr DDeessccrriippttiioonn PPeerr AAssssyy..

1 55615 Guard ......................................................................................................... 1 2 104503 Screw – Skt Hd 10-24 x 1 ¼ in. lg (SEMS) .................................................. 3 3 101191 Nut – Hex 10-24........................................................................................... 2 4 48864 Housing, Fan ............................................................................................... 1 5 104393 Screw – Pan Hd 10-24 x 3/8 in. lg ............................................................... 1 6 102762 Screw – Hex Hd 10-24 x ½ in. lg ................................................................. 1 7 101194 Lockwasher - #10 ........................................................................................ 1 8 100002 Washer – No. 10.......................................................................................... 2 9 48936 Cover Assy. – Spark Plug............................................................................ 1 10 48590 Shroud – Cylinder ........................................................................................ 1 11 48588 -------- Nameplate – Mc-30 .......................................................................... 1 12 48589 -------- Nameplate – McCulloch ................................................................... 1 13 100732 Screw – Hex Hd ¼-20 x 5/8 in. lg ................................................................ 2 14 100005 Washer, Plain ¼ in....................................................................................... 2 15 102128 Screw – Hex Hd ¼-20 x 3/4 in. lg ................................................................ 4 16 100311 Washer – Plain ¼ in..................................................................................... 4 17 58139A Cover – Crankcase bottom (Stuffer) ............................................................ 1 18 48909 Gasket – Crankcase bottom cover............................................................... 1 19 100249 Nut – Hex ¼-28............................................................................................ 2 20 100153 Lockwasher – ¼ in....................................................................................... 2 21 55252B Gasket – Carburetor .................................................................................... 1 22 Carburetor Assy. (See Figure 2) .................................................................. 1 23 104854 Screw – 10-24 x 3/4” lg (SEMS) .................................................................. 4 24 48507 Adapter Assembly – Carburetor .................................................................. 1 25 48611 -------- Stud – Carburetor............................................................................. 2 26 48512 Gasket – Adaptor-to-block ........................................................................... 1 27 48515 Block Assy – Reed Valve............................................................................. 1 28 104476 -------- Screw – Hex hd 8-32 x 5/16” lg ........................................................ 4 29 51480 -------- Lockplate.......................................................................................... 2 30 48591 -------- Guard – Reed Valve......................................................................... 2 31 48540 -------- Valve – Reed.................................................................................... 2 32 48519 Gasket – Block-to-manifold.......................................................................... 1 33 104854 Screw – Hex hd 10-24 x ¾” lg (SEMS) ........................................................ 4 34 48511 Body – Manifold ........................................................................................... 1 35 48516 Gasket – Manifold-to-crankcase .................................................................. 1 36 102388 Screw – Hex hd 10-24 x 5/8” lg.................................................................... 2 37 103100 Washer – Lock............................................................................................. 2 38 48609 Header – Exhaust ........................................................................................ 1 39 Powerhead Assembly (See Figure 3) .......................................................... 1



Figure 2. Mc-30 Carburetor. Model 48890




FIGURE 2. MC-30 CARBURETOR

IInnddeexx PPaarrtt UUnniittss NNoo.. NNuummbbeerr DDeessccrriippttiioonn PPeerr AAssssyy..

48890 Carburetor Assembly ................................................................................ 1 1 104520 -------- Screw – Pan Hd 10-24 x 7/8 in. lg (SEMS)....................................... 4 2 48897 -------- Body Assy – Fuel Pump ................................................................... 1 3 48911 -------------------- Filter – Fuel Pump.............................................................. 1 4 57274A -------- Diaphragm – Fuel Pump .................................................................. 1 5 48901 -------- Plate – Diaphragm............................................................................ 1 6 55067A -------- Diaphragm – Carburetor................................................................... 1 7 55090 -------- Needle – Idle adjusting..................................................................... 1 8 48810 -------- Needle – Main adusting.................................................................... 1 9 104001 -------- “O” Ring............................................................................................ 2 10 51705 -------- Spring – Idle speed screw ................................................................ 1 11 104000 -------- Screw – Pan Hd 4-40 x ¼ in. lg (SEMS) .......................................... 1 12 103540 -------- Lockwasher – Internal ...................................................................... 1 13 50701A -------- Arm – Throttle Shaft ......................................................................... 1 14 48820 -------- Spring – Throttle Return ................................................................... 1 15 104000 -------- Screw – Pan Hd 4-40 x ¼ in. lg (SEMS) .......................................... 1 16 103540 -------- Lockwasher – Internal ...................................................................... 1 17 55085 -------- Plate – Throttle ................................................................................. 1 18 102219 -------- Screw – Fil Hd 8-32 x 1/4 in. lg (SEMS) ........................................... 1 19 100252 -------- Lockwasher – No. 8.......................................................................... 1 20 55082 -------- Clip – Shaft....................................................................................... 1 21 48818A -------- Shaft Assy – Throttle ........................................................................ 1 22 48907 -------- Body Assy. – Carburetor .................................................................. 1 23 55397 -------------------- Screw – Idle ....................................................................... 1 24 104164 -------------------- Screw – Pan Hd 4-40 x ¼ in. lg.......................................... 1 25 104305 -------------------- Pin – Inlet Lever ................................................................. 1 26 55688 -------------------- Lever – Inlet Control........................................................... 1 27 57172 -------------------- Spring – Inlet Control ......................................................... 1 28 55476 -------------------- Valve – Needle................................................................... 1 29 55475 -------------------- Body – Needle Valve.......................................................... 1 30 55474 -------------------- Seat – Needle ................................................................... 1 31 55689 -------------------- Washer – Valve.................................................................. 1 32 104407 -------------------- Plug – Expansion 1 in ........................................................ 1 33 55690B -------------------- Seal – Capillary.................................................................. 1 34 102758 -------------------- Plug – Expansion ½ in ....................................................... 1 35 55062A -------------------- Bushing – Body.................................................................. 2



Figure 3. Powerhead Assembly. Mc-30 Engine.




FIGURE 3. POWERHEAD ASSEMBLY. MC-30 ENGINE. IInnddeexx PPaarrtt UUnniittss

NNoo.. NNuummbbeerr DDeessccrriippttiioonn PPeerr AAssssyy..

1 101965 Screw – Fil Hd 10-24 x 7/8 in lg (SEMS).................................................................... 2 2 100003 Washer – Plain #10 ................................................................................................... 2 3 51253 Retainer – Coil ........................................................................................................... 2 4 51251 Lamination Assy. – Coil ............................................................................................. 1 55949A Coil and Terminal Assy.............................................................................................. 1 5 101883 -------- Wire Assy. – Ground ...................................................................................... 1 6 55617 -------- Nipple – Spark Plug Wire ............................................................................... 1 7 52547 -------- Wire Assy. – Spark Plug................................................................................. 1 8 55060 -------------------- Boot- Spark Plug.............................................................................. 1 9 55061 -------------------- Connector – Spark Plug ................................................................... 1 10 -------- Coil Assy. (Order Coil and Terminal Assy # 55949A)..................................... 1 11 Spark Plug – 14mm ................................................................................................... 1 12 101179 Nut – Hex 7/16 – 20................................................................................................... 1 13 101270 Washer – Plain 7/16 in............................................................................................... 1 14 48785A Flywheel Assembly .................................................................................................... 1 15 103879 Key – Woodruff .......................................................................................................... 1 16 102763 Screw – Hex Hd 10-24 x ¾” lg................................................................................... 2 17 36388 Plate – Lock............................................................................................................... 1 18 57815 Strap – Seal ............................................................................................................... 1 19 50664 Seal – Breaker box drain ........................................................................................... 1 20 Intentionally Blank...................................................................................................... 0 21 104554 Speednut ................................................................................................................... 1 22 102763 Screw – Hex hd 10-24 x ¾” lg.................................................................................... 4 23 55977 Clip – Breaker box cover............................................................................................ 2 24 55766B Cover and Gasket Assy – Breaker Box ..................................................................... 1 25 54184 Wiper – Felt ............................................................................................................... 1 26 104555 Screw – Fil hd 8-32 x ½” lg (SEMS)........................................................................... 1 27 100080 Washer – Plain No. 8................................................................................................. 1 28 100955 Nut – Hex 8-32........................................................................................................... 1 29 50074 Condenser ................................................................................................................. 1 30 103748 Screw – Hex Hd 8-32 x ½ in. lg ................................................................................. 1 31 57766 Wire Assy. – Primary ................................................................................................. 1 32 55782 Insulator..................................................................................................................... 1 33 57769 Insulator – Ignition Screw........................................................................................... 1 34 57770 Insulator – Breaker Spring ......................................................................................... 1 35 104553 Washer – Lock #8...................................................................................................... 1 36 100251 Nut – Hex 8-32........................................................................................................... 1 37 100414 Screw – Fil hd 8-32 x ½” lg ........................................................................................ 1 38 100057 Lockwasher................................................................................................................ 2 39 55778 Washer – Special ...................................................................................................... 1 40 103061 Screw – 8-32 x ½” lg.................................................................................................. 1 41 57767A Lockplate ................................................................................................................... 1 42 57765A Breaker Assy. ............................................................................................................ 1 43 104534 Screw – Skt hd 10-24 x 1-13/32” lg............................................................................ 6 44 24236 Washer – Special....................................................................................................... 6 45 48742A Gasket – Head........................................................................................................... 1 46 48903 Head – Cylinder ......................................................................................................... 1 47 58132 Pin – Piston (wristpin) ................................................................................................ 1 48 51209 Washer – Thrust ........................................................................................................ 2 48518 Piston Assy. – Standard size ..................................................................................... 1 49 48978 -------- Ring Set – Piston standard size ..................................................................... 1 50 101206 -------- Bearing – Needle............................................................................................ 1 51 104378 -------- Bearing – Needle (Closed end) ...................................................................... 1 52 -------- Piston (Order Piston Assy. 48518) ................................................................. 1 53 48905 Connecting Rod Assy ................................................................................................ 1 54 104589 -------- Screw – Skt Hd 10-32 x 9/16 in lg (Rod Bolt) ................................................. 2 55 102742 -------- Roller - Needle .............................................................................................. 24


Part No. IPL 48596 www .mccullochracing.com

FIGURE 3. Powerhead Assembly. Mc-30 Engine (Continued)

IInnddeexx PPaarrtt UUnnii ttss NNoo.. NNuummbbeerr DDeessccrriipptt iioonn PPeerr AAssssyy..

57768A Crankcase Cover Assy. ......................................................................................... 1 56 101326 ----- Nut – Hex 10-24 ............................................................................................. 1 57 50663 ----- Seal – Oil........................................................................................................ 1 58 57784 ----- Seal – Oil........................................................................................................ 1 59 ----- Cover – Crankcase (Order Assy # 57768A) ................................................... 1 60 104523 “O” Ring................................................................................................................. 1 61 100824 Bearing – Ball ........................................................................................................ 1 62 104490 Bearing – Ball ....................................................................................................... 1 63 58128 Crankshaft ............................................................................................................. 1 48992 Cylinder Assy. – Crankcase .................................................................................. 1 64 101326 ----- Net – Hex Hd 10-24........................................................................................ 6 65 28053 ----- Retainer – Nut ................................................................................................ 2

66 101326 ----- Net – Hex Hd 10-24........................................................................................ 2 67 18556A ----- Retainer – Nut ................................................................................................ 6

68 101143 ----- Nut – Hex ¼-20 .............................................................................................. 6 69 104486 ----- Seal – Oil........................................................................................................ 1 70 104255 ----- Retainer – Nut ................................................................................................ 2 71 57063 ----- Retainer – Nut ................................................................................................ 4 72 103061 Screw – Fil hd 8-32 x 3/8” lg.................................................................................. 1 73 57829 Clamp – Ignition Wire ........................................................................................... 11 74 103879 Key – Woodruff...................................................................................................... 1 75 Cylinder – Crankcase (Order Assy 48992) ........................................................... 1

OVERSIZED PISTON ASSEMBLY AND ACCESSORIES

PPaarrtt NNuummbbeerr DDeessccrriipptt iioonn

53924 Piston Assy. - +0.010 inch oversize 48692 -------- Ring Set – Piston +0.010 inch oversize 53925 Piston Assy. - +0.020 inch oversize 48693 -------- Ring Set – Piston +0.020 inch oversize 53926 Piston Assy. - +0.030 inch oversize 48694 -------- Ring Set – Piston +0.030 inch oversize 48637 Sprocket – 10 tooth #35 Chain 48638 Sprocket – 11 tooth #35 Chain 48639 Sprocket – 12 tooth #35 Chain 48712A Clutch Assy. – Dry 48645 Header – Exhaust (Tuned) 14317 Kit – Muffler 48711D Kit – Starter, Recoil 48663 Kit – Starter, Pawl 13178A Kit – Engine Mounting 13598 Carburetor Inlet Stack

All li ne drawings and logo s are Copyright © 2001, McCulloch Racing Corporation, Las Vegas, Nevada, U.S.A. Any reprodu ction o f this document, its line drawings, ill ustrations or logo s withou t the express written consent of McCulloch Racing Corporation is ill egal and pun ishable und er International Copyright Agreements. McCulloch Racing Corp. is the sole owner of the following copyrighted symbols and o r logo s:

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